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PROCESS OP'AND APPARATUS 'FOR SEPARATING LIQUIDS AND SOLIDS.

No. 562,376. Patented-June 23, 1896.

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t UNITED STATES PATENT YOEEICE.`

MARVIN I-I. OI-IAMBERLAIN, OF DETROIT, MICHIGAN, ASSIGNOR TO TIIE DETROIT `LIQUID SEPARATING COMPANY, OF SAMEPLAOE.

PROCESS OF AND APPARATUS FOR SEPARATING LIQUIDS AND SOLIDS.`

SPECIFICATION forming part of Letters Patent No. 562,376, dated une 23, 18916.

Application iiled February 12, 1896. Serial No. 579,036. (No model.)

Bc it known that I, MARVIN II. CHAMBER- LAIN, a citizen of the United States, residing at Detroit, in the county of Vayne and State of Michigan, have invented certain'new and useful Improvements in Apparatus for .Cooking and Separating Liquids and Methods of Using Same, of which the following is a specification.

My invention relates to an improved apparatus for rendering, expressing, and separating liquids from any material necessary to be so treated; and also to the method and process employed in connection with said apparatus.

The tank hereinafter set forth and the method of using the same are designed to be employed in extracting and expressing liquid from distillery-slops, brewery-slops, ground grain containing liquid, wet grain, pulp of any nature, wool-slop, orany analogous or similar materials, or in cooking, rendering, and separating liquids from any substance requiring such treatment.

In the annexed drawings, Figure l is a vertical sectional view; Fig. 2, a horizontal sectional view on the lines a; and y y of Fig. 1, and Fig. 3 is a detail View.

A designates the body of the tank, made of any suitable material` and capable of withstanding a pressure 4of about one hundred and fifty pounds, or any requisite amount.,

At the upper end there is provided an opening B, suitable means being employed` for` tightly closing the same when necessary. A similar opening C is formed on the side at or near the lower end of the tank, means being provided whereby said opening may also be tightly closed.

D indicates a perforate grid or false bottom, preferably made in sections and mounted upon a series of circular supports E. Any supports capable of withstanding the load and pressure may be used; but I prefer the construction shown. F, securely riveted or otherwise secured to the shell of the tank, supports the outer edge of the grid. As will be seen upon reference to Fig. 1, the grid or perforated bottom is on a level with the lower part of the opening O, so that the material resting thereon may be readily withdrawn through said opening An annular flanged collar Whenever it becomes necessary or is desirable to do so.

The lower edges of the supports or rings E are cut away, as at ct, to insure proper drainage to the lower end of the tank to a valved outlet or draw-off G.

A coil of perforated pipe II is secured below the false bottom and connects with a valved pipe I, extending through the shell or casing. As indicated in Fig. l, the pipe I may be provided with valved branches connected with the draining-chambers hereinafter set forth. Under some circumstances the perforated coil may be located above the false bottom, and I do not wish to limit myself to its exact location. Above the bottom D is an annular screen or perforated plate J. This screen may be extended as far up in the tank as may be found necessary or convenient, a flanged collar K being secured to its upper end, closing the space between it and the shell of the tank, and a similar collar K being provided at its lower end.

A series of collars or rings h are placed between the tank and the plate throughout its length, forming a series of separated annular chambersor compartments c c c2 c3, as many chambers being formed as there are collars employed. Sections of angle iron d, of a length shorter than the depth of the chamber, may be placed between the screen and the shellor casing to stiffen the said screen. Each chamber is provided at its lower end with a valved outletor drainage pipe, as indicated at c e c2 e3 in the drawings. These pipes will preferably be connected with a common drain f, though this connection is not essential. An opening is formed through the screen in line with the opening C, so that free access may be had through said opening into the interior of the tank.

L designates a perforated draining-tube, preferably of the form shown in Fig. It is formed of a pipe or tube comprising two uprights or legs h h, connectedby a cross-piece g, the whole being perforated throughout its length and designed lto rest upon the false bottom on the open lower ends of the legs. As many of these tubes will be employed as is found necessary, and their length will be determined bythe nature or character of the ico I, Sure.

material under treatment. So, too, the depth of the annular screen Will be determined by the character of the materialbein g handled. I do not wish to limit myself to the exact form of tube herein set forth, as various forms may be employed. It is of course essential that the construction be such that the material being treated cannot enter the draining-tube, and under the construction herein set forth this is not possible.

In'treating some materials it is necessary to employ a cloth or other pervions covering over the drainage-tubes, the false bottom an d the annular draining-section.

Preferably the pipe I is connected to a pipe M, which extends upwardly toward the top of the tank, where a lateral branch N enters the top of said tank. The pipe M then extends to a source of supply of steam, compressed air, gas, or other iiuid under pres- IfA desirable the pipe I may pass directly to the source of supply, as will also the pipe N.` Suitable valves will be placed in the pipes I and N.

A valved outlet O is provided about midway of the height of the tank to provide proper drainage when certain classes of material are placed therein. This outlet also serves as an initial drain before pressure is applied, the material in many cases settling and' leaving a quantity of fluid on top, which can thus be Withdrawn. If found necessary or desirable, more than one of these outlets may be employed.

A suitable outlet P is placedy on the upper end of the tank for attachment of a safetyvalve.

The operation of the tank is as follows, the material in this instance being of such a character as to require cooking: All the valves, the outlet G, and opening() being closed, the tank is charged with material through the opening B, and after a sufficient quantity is placed therein the opening is closed. The valve in pipe I is then opened, allowing the cooking agent to pass into the perforated coil H, the agent passing up through the material, which accomplishes its cooking. The safety-valve is so set as to determine the pressure in the tank and to allow asufficient escape therefromv to facilitate the cooking. The pressure used in cooking is low compared to that employed for pressing or expressing the moisture. Vhen the material has been sufficiently cooked, and the characte'rof' the material will govern the length of time necessary, the valve in pipe I is closed, the outlet' Gand the valve in pipe N opened, allowing the liquid contained in the material to run out and the Huid-pressure to enter the tank above the material. Theblow-off' valve isthen adjusted to maintain the required amount of pressure which is employed for compression. The Huid entering the tank above the material will create a pressure thereon which will force the contained liquids through the perforated drain or sieve,

the perforated pipes, and the perforated false bottom. This pressure should be continued until such portion of the liquid as may be desired, of whatever nature, whether grease, water, &c., is expressed from the material under treatment.

The safety or blow-off valve IJ will of course be so regulated that the exact degree of pressure desired is exerted, and such pressure will of course be exerted as long as necessary. As the material is pressed and falls below the upper section of the perforated screen the outlet to that portion is cut off, and so with each succeeding-section of the screen as it becomes necessary.

Some materials may require a pressure for cooking equal to that employod for the expression of the liquid therefrom, and the apparatus will be regulated accordingly.

Vhen the liquid ceases to flow from the outlets, said outlets are closed, as is also the valve in pipe N. The blow-off valve P is opened, as is the door or opening C, through which latter the pressed material from which the liquid has been separated is withdrawn. The tank may then be recharged and the operation repeated.

If the material under treatment does not require cooking, then the admission of the cooking agent into the material is omitted,

`but the other steps of the process are carried out as above stated. Y

In some instances the coil and the other provisions for cooking maybe omitted altogether from the tank.

As above stated, the apparatus is designed to be used for treatment of various materials. In fact, it may be used with any materialrequiring to be cooked, drained, and dried, or with any material to be simply dried, or the contained'liquid extracted'or expressed'therefrom.

In treating matter containing grease, the

`cooking agent first cooks and opens up the material permitting the grease and water to iiow therefrom, and after such separation the grease, water, or other liquids are expressed from the bulk by the fluid-pressure, which leaves the resultant mass in a comparatively dry and compressed state.

The comparatively large draining-surface is much in excess of the area of material upon which the fluid-pressure has to act, and consequently the separation of the water or other contained liquid is rapid.

I do not wish to limit myself to any exact proportions for the tank, nor need itnecesvsarily'be cylindrical in cross-section. So, too,

instead of forming the draining-chambers Vwithinthe tank, the lower end of the Wall may be perforatedand form the draining-surfaces, the separate draining chambers or compartments being formed upon the outside of the Shell.

Having thus described my invention, what I claim ism l. rlhe process of treating garbage, distil- IOO IIC

IIS

lery-slops, and the like, which consists in suspending suchmaterial upon a perforate surface in a closed vessel; passing a cooking agent through said material and allowing its escape from the vessel when a determinate pressure is obtained; shutting off the cooking agent when the material is sufficiently cooked; allowing the grease, water, 85o., to drain from the material; and iinally admitting iiuid-pressure above the material for compression and expulsion of the remaining liquid therein.

2. The process of treating garbage, distillery-slops, and the like, which consists in suspending such material upon a perforate surface in a closed vessel; passing a cooking agent through said material at a comparatively low pressure', shutting off said agent when the material is sufiiciently cooked; ailowing the contained liquid to drain from the material; and finally admitting the iiuid under high pressure, above the material for compression and expulsion of the remaining liquid.

3. The process of treating garbage, distillery-slops and the like, which consists in sustaining such material by an extended perforate surface; and applying huid-pressure to a comparatively small surface of the material from above.

1i. The combination with the shell or cas-l ing; of a perforated grid; a series of annular supports for said grid, having openings `or spaces formed on their lower edges, and an opening in the bottom of the tank.

5. The combination with the shell or casing; of a perforated false bottom or grid; a series of supports for the grid, having open` ings or passages on their lower edges; an opening in the tank beneath the grid; and an annular screen or sieve secured at a distance from the shell or casing above the false bottom.

6. The combination with the shell or casing, provided with the filling and discharge openings; of the perforated grid or bottom secured near the base of the tank; supports for the grid; an opening in the tank-bottom below the grid; a perforated coil in proximity to the grid, a pipe connected to the coil extending toward the upper end of the tank; a pipe entering at or near the top of tank, and an adjustable blow-off valve.

In witness whereof I hereunto set my hand in the presence of two witnesses.

MARVIN Il. CHAMBERLAIN.

Witnesses:

A. G. PIrTs, CHAs. D. HAsTiNGs. 

